Molder&#39;s chaplet



Nov. 20, 1928. 1,692,426

H. STUART I M DERs CHAPLET Filed June 25, 1927 I, m /7' lNl/ENTO}? Patented Nov. 20, 1928.

UmTED E PA ENTLiQF EE! HUGH STUART, 0F GRANITE crr Y, iLnmoIs, ASSIGNOE ToooMMonwEA L'rH STEEL COMPANY, or GRANITE CITY, .ILLINOISLA conPon-A'rronor nnwannsnr.

MOLDER S oHAPLnr.

Application filed June My invention relates to the art of casting metal and consistsinanimproved molders' chaplet for'use in the usual manner. I

The ordinary chaplet,provided'with a stem or shankand'core and mold engaging plates, is not always satisfactory for the reason that-- the molten metal, when cooling, shrinks away from the chaplet shank, leaving a crevice which may extend the full length of the shank and around the plates on the end of the shank. Ordinarily the presence of such a crevice is not objectionable but where the web of the casting surrounding the chaplet'is required to be water-tight, leakage through a crevice about the chaplet is highly objectionable.

The object of my invention is to provide a chaplet which will eliminate the possibility of such leaks.

In the accompanying drawings which illustrate my invention Figure 1 is a side elevation of one form of my improved chaplet.

Figure 2 is a top view of the same.

Figure 3 is a side elevation of a modified form of my invention.

Figure 4: is a transverse section on an enlarged scale through another form of my invention and showing the chaplet in the mold and surrounded by the metal which has been poured into the mold.

The chaplet shown in Figure 1 comprises a stem or shank 1, a top plate 2, and a bottom plate 3, the shank being riveted to the plates 7 as indicated at 4 or otherwise secured thereto. Intermediate the ends of the shank the same is provided with one or moreradially extending ribs or fins 5- which project a substantial distance from the shank.

' The plates 2 and 3 are positioned relatively to each other. so that their corners are dis- .aligned whereby. the chaplet may be readily nailed to the adjacent portions of the mold or core. This particular i'eatureis not new with me, being shown and described in Swanson Patent No. 1,160,785.

The fins 5 are of such diameter and thin ness that molten metal flowing into the mold and surrounding the shank of the chaplet will flow over the fins between their peripheries and the shank to such an extent that irrespective of any shrinkage which takes place in the cooling metal one or more of the fins will be gripped and partially melted by the molten 1927 swarm; eoisae.

metal and a tight joint thereby formed between the chaplet shank and the cast metal.

Inthe modificationillustrated in Figure 3,

I'show thejoint forming elements as com--- prising a-screw thread 6 formingapproximately two complete'turns about the shank 7 and spaced from the top and bottom plates 8 ant 9. i

In the construction shown in Figure 4, the fins 10 are tapered toward their outer periph-. eries as indicated at 11 and the thinner edge thus provided on the fins more certainly insures the melting-of a portion of the fins when the molten metal flows around the same whereby the metal of the fin and casting will merge together. Such melting action is indicated at 1 7 where portions of the fins have been absorbed by the casting metal 16. In

this figure the bottom plate 12 is shown as:

resting upon a portion 13 of a mold. and the top plate 14 is shown as supporting a core 15' and the space between the mold 13 and the core 15 is shown as filledwith the metal 16 and although shrinkage of the metal from the chaplet shank and plates is indicated, it

will be noted that the wall formed by the casting is fluid-tight because o'f'the joint or joints formed bythe fins 10. V

I have found my chaplet particularly useful in casting locomotive tender underframes in which webs of the underframe'casting are utilized to form portions ofthe water tank structure. The chaplet would be of similar value in engine castings having core-formed walls which should be tight enough to prevent any escape'of gas or steam. I

Obviously, the number of 'fins may be reduced or increased and the particular size and shape of the fins may be varied according to the size of the chaplet, the qualities of the metal being cast, and other conditions at fecting the functioning of the chaplet as described.

I contemplate the exclusive use of all such modifications of my invention as come within the scope of my claims.

I claim: I

1. In a molders chaplet, a core-supporting shank, core or mold engaging heads on said shank, and a radial fin on saidshank between said heads, said shank comprising a continuous solid section of substantial thickness between said heads to firmly support the core throughout a casting operation, and said fin being of substantially larger diameter than said shank and the outer portion of said fin being much thinner than said shank or the inner portion of said fin so that said outer portion will be melted by the heat of the molten metal poured into the mold during the casting operation and unite with the/casting metal to form a fluid-tight joint with the ohaplet before any similar melting of saidshank occurs and irres ective of shrinkageof the cast metal away rom said shank upon cooling of the cast ng.

' said fins being much thinner than said shank orthe inner portions ofsa id fins so that said outerportions of said fins will 'be melted by the heat of the molten metal poured into the mold during the casting operation and unite with the casting metal to form a series of fluid-tight joints with the chaplet before any similar. xneltingof said; shank occurs van d irre- '2. In a molders ohaplet,a core-supporting spectiveof shrinkage of the cast metal away shank, core or mold engaging heads on said shank and a plurality of radial fin-s on'said shank between said heads and spaced there- ;from and "from each other, said shank comfrom saidshank upon cooling of the casting. In testimony whereof I hereunto afiix my signature this 18th day of June, 1927.

THIGH STUART. 

